Scientists analyzing Antarctic ice have discovered iron-60, a radioactive isotope forged in stellar explosions, revealing how our solar system has traversed the Local Interstellar Cloud over the past 80,000 years.
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Stardust trapped in Antarctic ice reveals tens of thousands of years of solar system's past
Accelerator Mass Spectrometry Discovery method
Iron-60 From Supernovae Isotope traced
80,000 Years Of Movement Mapped Solar system history
300 Kg ice analyzed
500 Kg snow sampled
40,000 Years timescale studied